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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// ignore-tidy-linelength
// compile-flags: -C no-prepopulate-passes
#![crate_type = "lib"]
#![feature(naked_functions)]
// CHECK: Function Attrs: naked uwtable
// CHECK-NEXT: define void @naked_empty()
#[no_mangle]
#[naked]
pub fn naked_empty() {
// CHECK-NEXT: {{.+}}:
// CHECK-NEXT: ret void
}
// CHECK: Function Attrs: naked uwtable
#[no_mangle]
#[naked]
// CHECK-NEXT: define void @naked_with_args(i{{[0-9]+}})
pub fn naked_with_args(a: isize) {
// CHECK-NEXT: {{.+}}:
// CHECK-NEXT: %a = alloca i{{[0-9]+}}
&a; // keep variable in an alloca
// CHECK: ret void
}
// CHECK: Function Attrs: naked uwtable
// CHECK-NEXT: define i{{[0-9]+}} @naked_with_return()
#[no_mangle]
#[naked]
pub fn naked_with_return() -> isize {
// CHECK-NEXT: {{.+}}:
// CHECK-NEXT: ret i{{[0-9]+}} 0
0
}
// CHECK: Function Attrs: naked uwtable
// CHECK-NEXT: define i{{[0-9]+}} @naked_with_args_and_return(i{{[0-9]+}})
#[no_mangle]
#[naked]
pub fn naked_with_args_and_return(a: isize) -> isize {
// CHECK-NEXT: {{.+}}:
// CHECK-NEXT: %a = alloca i{{[0-9]+}}
&a; // keep variable in an alloca
// CHECK: ret i{{[0-9]+}} %{{[0-9]+}}
a
}
// CHECK: Function Attrs: naked uwtable
// CHECK-NEXT: define void @naked_recursive()
#[no_mangle]
#[naked]
pub fn naked_recursive() {
// CHECK-NEXT: {{.+}}:
// CHECK-NEXT: call void @naked_empty()
// FIXME(#39685) Avoid one block per call.
// CHECK-NEXT: br label %bb1
// CHECK: bb1:
naked_empty();
// CHECK-NEXT: %{{[0-9]+}} = call i{{[0-9]+}} @naked_with_return()
// FIXME(#39685) Avoid one block per call.
// CHECK-NEXT: br label %bb2
// CHECK: bb2:
// CHECK-NEXT: %{{[0-9]+}} = call i{{[0-9]+}} @naked_with_args_and_return(i{{[0-9]+}} %{{[0-9]+}})
// FIXME(#39685) Avoid one block per call.
// CHECK-NEXT: br label %bb3
// CHECK: bb3:
// CHECK-NEXT: call void @naked_with_args(i{{[0-9]+}} %{{[0-9]+}})
// FIXME(#39685) Avoid one block per call.
// CHECK-NEXT: br label %bb4
// CHECK: bb4:
naked_with_args(
naked_with_args_and_return(
naked_with_return()
)
);
// CHECK-NEXT: ret void
}
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